[ExI] Neutrino interaction web

Richard Loosemore rpwl at lightlink.com
Fri Mar 4 13:54:00 UTC 2011

Ben Zaiboc wrote:
> Anders Sandberg <anders at aleph.se> wrote:
>> Ben Zaiboc wrote:
> I'm talking rubbish, aren't I?  Plain old lead would be much better.  Oh, well..

I wouldn't go that far :-), but the collision cross section for 
neutrinos is estimated to be such that if you want to catch a 
significant fraction of them you need *roughly* a 1 light-year thick 
sheet of lead.

So, I don't see any problem with Adrian's ideas except that you need to 
take a 1 light-year thick sheet of lead then compress it to make a thin 
sandwich that we can install in orbit, to collect the sun's neutrino output.

Shouldn't be too difficult.  Bit of engineering, is all.

Richard Loosemore

More information about the extropy-chat mailing list